Rockwell Automation 1734-485ASC POINT I/O ASCII User Manual - Manual (Page 11)

1 Publication 1734-UM009B-EN-P - July 2003
Chapter
1
Installing the ASCII Module
General Information on
the ASCII Modules The ASCII modules provide a flexible DeviceNet interface to a wide
variety of RS-232, RS-485, and RS-422 ASCII devices. The modules
provide the communication connections to the ASCII device.
The 1734-232ASC module connects to the RS-232 network while the
1734-485ASC module connects to the RS-485 or RS-422 network.
Installing the Mounting
Base/ Wiring Base
Assembly The wiring base assembly (1734-TB or -TBS) consists of a mounting
base (cat. no. 1734-MB) and a removable terminal block (cat. no.
1734-RTB or -RTBS). You can install the assembly, or just the
mounting base. To install the mounting base/wiring base assembly on
the DIN rail, proceed as follows.
ATTENTION
!
POINT I/O is grounded through the DIN rail to
chassis ground. Use zinc-plated, yellow-chromated
steel DIN rail to assure proper grounding. Using
other DIN rail materials (e.g. aluminum, plastic, etc.)
which can corrode, oxidize or are poor conductors,
can result in improper or intermittent platform
grounding.
WARNING
!
When you connect or disconnect the Removable
Terminal Block (RTB) with field side power applied,
an electrical arc can occur. This could cause an
explosion in hazardous location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding.